A high-frequency device for scattering communication with full-band operation

Abstract

The present invention is a high-frequency device for scattering communication that works in the full frequency band, including a frequency converter, a power amplifier, a limiting low-noise amplifier, a first circulator, a second circulator, a coupler and a load, a frequency conversion filter for a transmitting channel, and a receiving channel Frequency conversion filter, transmit channel duplex filter, receive channel duplex filter and monitoring unit. The intermediate frequency input signal is firstly up-converted by the frequency converter to the RF signal, and the RF signal is sent to the power amplifier after being frequency-selected by the frequency conversion filter of the transmission channel. The duplex filter feeds the high-power signal into the antenna and is transmitted by the antenna; the small radio frequency signal received from the antenna first passes through the receiving channel duplex filter for frequency selection, and then enters the limiting low-noise amplifier for low-noise limiting amplification , and then filtered by the frequency conversion filter of the receiving channel, it enters the down conversion of the frequency converter, and the frequency is converted into an intermediate frequency signal, which is amplified to a suitable level and then sent to the low frequency unit.

Description

technical field [0001] The invention relates to a high-frequency device for scattering communication in the field of communication, which can be continuously tuned in the range of 4400MHz to 5000MHz, can transmit 100W continuous wave power, and supports 35MHz signal bandwidth, and is especially suitable for complex networking and large-scale applications. Scattered communication system for capacity, long-distance signal transmission. Background technique [0002] At present, high-frequency equipment for scattering communication has been widely used in the C-band. With the development of the times, the requirements for high-frequency equipment are getting higher and higher, such as free networking, small size, high transmission power, and low noise figure. If a fixed-section waveguide duplexer is used inside the high-frequency equipment, high-power transmission signals can be completed, and the noise figure can also be small, but the networking function cannot be completed, ...

AI Technical Summary

Problems solved by technology

If a fixed segmented waveguide duplexer is used inside the high-frequency equipment, high-power transmission signals can be completed, and the noise figure can also be small, but it cannot complete the networking function, and can only transmit signals point-to-point

Using a coaxial duplexer and a coaxial switch to connect with a coaxial cable can achieve a small size, but the transmission power is small, and the power is reduced by about 3dB from the output port of the power amplifier to the outlet of the device

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